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All Journal JURNAL KARYA TEKNIK SIPIL
Han Ay Lie
Jurusan Teknik Sipil FT. UNDIP Jl. Prof. Soedarto SH. Tembalang, Semarang 50275
Civil Engineering, Building, Construction & Architecture

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STUDI EKSPERIMENTAL PERBANDINGAN VARIASI SENGKANG MIRING TERHADAP KUAT GESER BALOK BETON BERTULANG Arif Rachman Subiantoro; Rifa Aulia Bakri; Sri Tudjono; Han Ay Lie
Jurnal Karya Teknik Sipil Volume 2, Nomor 3, Tahun 2013
Publisher : Departemen Teknik Sipil, Fakultas Teknik Universitas Diponegoro

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Shear reinforcement in beams commonly known as reinforcement stirrups, vertical stirrup reinforcement, spiral reinforcement stirrups and stirrup bones tilted according to SNI-03-2847-2002 of the three types of vertical stirrup reinforcement is more commonly used in the concrete work because of the ease in implementation. For that the research will be carried out experimental studies comparing variations dash angled towards the shear strength of reinforced concrete beams. In this study will be made of 3 pieces slanted stirrups variations, ie sloping concrete beams cross bar welded middle (B2), sloping concrete beams cross bar latches satandar 135 ° (B3), concrete beam welding sloping top corner stirrups (B4) and 1 piece of concrete beams without cross bar that serves as a control beam (B1) with dimensions of beams used 100x200x2200 mm, the tests performed by a single point loading in the middle of the span. Based on the results of the 3 variations slanted stirrups, stirrups with slanting beam welding center (B2) was able to withstand the load Pu = 44.72 KN, shear force Vu = 22.84 KN and beam capacity rose 15.81%, sloping beams with stirrups standard hooks (B3) capable of withstanding the load Pu = 53.625 KN, shear force Vu = 27.29 KN and capacities up 38.89% beams, welded beams with stirrups sloping top corner (B4) capable of withstanding the load Pu = 54.580 KN, shear force Vu = 27.87 KN and beam capacity rose 41.88% of the beam without using stirrups.
PENGARUH RASIO JARAK AGREGAT TERHADAP KUAT TEKAN BETON MORTAR Bayu Asmoro; Moh. Wahyudi; Han Ay Lie; Purwanto Purwanto
Jurnal Karya Teknik Sipil Volume 2, Nomor 3, Tahun 2013
Publisher : Departemen Teknik Sipil, Fakultas Teknik Universitas Diponegoro

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In this research used  aggregate with the diameter of 2 cm and heigth of 5 cm, with the number of 2, is being plant to a mortar concrete, That have a cube and  10 x10 x5cm size, with the position of the aggregate is being variant from vertical to horizontal planted with the ratio of the distance between the two aggregate is 4 cm and 3 cm from its center of gravity point.Making mortarconcrete specimens using Ordinary Portland Cement (OPC) using the comparison 1 Pc: 2.75 of sand and 0.485 of water cement ratio conforming with ASTM C 109 (Compressive Strength of Hydraulic Cement mortars) standard. The Test is being held with used of compression test which is Hung Ta with the compressive and displacement data out put is being recorded by data logger and LVDT (Linear Variable Displacement Transducer). The results from research show how different ratio of the distance affect the compressive strength. Specimen with the 4 cm distance ratio horizontal position has highest value strength of concrete mortar. The crack of model is columnar crack following contour  compressive stress and perpendicular tensile stress.
PENGARUH KOMPOSISI NANO SEMEN PADA PERILAKU BETON Elfiranahla Chandra Dewi; Kartika Trisna Apsari; Purwanto Purwanto; Han Ay Lie
Jurnal Karya Teknik Sipil Volume 2, Nomor 4, Tahun 2013
Publisher : Departemen Teknik Sipil, Fakultas Teknik Universitas Diponegoro

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This study aimed to investigate the influence of the composition nano-cement to compressive strength and flexural strength on concrete. First step in the produced of concrete with nano materials, necessary constituent concepts concrete material selection right. Cement with fine grains have a larger surface area than the coarse grained cement, thus increasing the surface area of a grain of cement hydration process faster so that more amount of cement that can react with water to increase  so the compressive strength will be increase too. Increased in the compressive strength of concrete will be accompanied by a increased in flexural strength. To determine the effect of the composition nano-cement was used variation of composition nano-cement 0%, 5%, 10%, 15%, and 20%. Specimens for compression test is a cylindrical 10 cm diameter and 20 cm high, and Specimens for flexural test is  15 x 15 x 60 cm. The tools used in the testing is a load cell, LVDT (Linear Variable Displacement Transducer), and data loggers. Through this research is expected, in addition to knowing its effects on concrete compressive strength and flexural strength, can also determine relationship between compressive strength and flexural strength.
PENGARUH KETEBALAN TERHADAP KEKUATAN PANEL KACA Fridha Nurrahma; Muryanti Muryanti; Ilham Nurhuda; Han Ay Lie
Jurnal Karya Teknik Sipil Volume 2, Nomor 2, Tahun 2013
Publisher : Departemen Teknik Sipil, Fakultas Teknik Universitas Diponegoro

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This research aimed at investigating the effect of glass thickness on the strength of annealed glass panels. The research was conducted using both experimental tests and numerical simulations. The experimental tests were conducted using the double ring method, while the numerical simulations were carried out using Finite Element Method (FEM). Numerical simulations were conducted first to determine efficient meshing, dimension of the specimen, and the equipment capacity. The number of specimens were 400 with the same width and length of 200 mm x 200 mm. The thickness of which were varied from 3 mm up to 10 mm. The test results were maximum load and fracture origin. Both of these results were used to calculate the strength of the glass that was expressed as failure stress at the location of fracture origin. The failure stress scattered in a wide range, hence statistical analysis was required to analyze the glass strength. From the analysis, it can be seen that the strength of glass was affected by its thickness. Some graphs have been created to show the allowable pressure that can be resisted by certain dimension of glass panels.
Co-Authors Arif Rachman Subiantoro Bayu Asmoro Elfiranahla Chandra Dewi Fridha Nurrahma Ilham Nurhuda Kartika Trisna Apsari Moh. Wahyudi Muryanti Muryanti Purwanto Purwanto Rifa Aulia Bakri Sri Tudjono